Silo slip form pouring construction platform and construction method thereof

Abstract

The invention discloses a silo slip form pouring construction platform and a construction method thereof.The silo slip form pouring construction platform comprises an annular inner side steel formwork and an annular outer side steel formwork which are arranged in a clearance sleeving mode, and the inner side steel formwork and the outer side steel formwork are fixedly connected through a plurality of gantry lifting frames; annular construction platforms are erected on the inner side of the inner side steel formwork and the outer side of the outer side steel formwork correspondingly, scaffold hanging brackets are erected at the bottoms of the two annular construction platforms correspondingly, first slip form jacks are arranged on the multiple gantry lifting frames correspondingly, and a plurality of supporting rods extending upwards are embedded in the circumferential direction of the silo. The multiple first slip form jacks are arranged on the multiple supporting rods in a sleeving mode correspondingly and matched with the multiple supporting rods for overall climbing and hovering of the silo slip form pouring construction platform, and inner ring brushes and outer ring brushes for cleaning the inner side steel formworks and the outer side steel formworks correspondingly are further movably arranged on the supporting rods; according to the scheme, the problems that in the prior art, when the silo is poured, the construction efficiency is low, and the pouring quality is difficult to control are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of silo slip form construction, and particularly relates to a silo slip form pouring construction platform and a construction method thereof. Background Art

[0002] As a core link, the construction technology of concrete structures directly affects the quality and efficiency of buildings; in the prior art, large-diameter grain silos for storing grain or powder materials widely used in industries such as grain and electricity are used to store grain or materials. The structural characteristics of large-diameter grain silos are that the lower silo wall is a cast-in-place concrete structure, and the upper silo top is a space steel structure. When forming the silo barrel, scaffolding needs to be erected on-site during the forming process of the lower silo wall; however, the traditional form of the operation platform is bulky, wasteful of materials, difficult to assemble and disassemble, directly affecting the project progress, and increasingly unable to adapt to the development of slip form construction technology. Especially in the slip form construction of large-diameter shallow cylindrical silos, problems such as low construction efficiency, high difficulty in quality control, and high construction costs gradually emerge.

[0003] Under this background, the slip form construction technology emerged and developed rapidly. With its unique construction principle and technological characteristics, in many projects such as high-rise buildings, chimneys, and silos, the slip form platform has demonstrated significant application advantages; however, during the lifting process of the slip form platform, if the diameter of the silo is too large, the platform will be significantly affected by many factors, such as self-weight, construction live load, concrete frictional resistance, and various additional loads, and thus deformation will occur; once the platform deforms, it will have a great impact on the slip form process. It may be due to the excessive height difference of the platform slip, resulting in the verticality of the structure exceeding the allowable deviation range, or the torsional deviation being relatively serious. Even more seriously, it may lead to the situation where the slip form operation cannot continue; at the same time, repeated pouring will cause a large amount of cooled concrete to adhere to the slip form surface, resulting in an increase in the friction between the slip form and the concrete, increasing the load-bearing capacity of the jacks. At the same time, the concrete adhering to the inner wall of the slip form will slide upward with the slip form, scratching the already formed concrete, thus affecting the pouring quality of the silo wall surface; these problems not only affect the construction efficiency but also may lead to unqualified project quality; therefore, it is of great significance to develop a silo slip form pouring construction platform that can effectively solve the above problems. Summary of the Invention

[0004] Aiming at the above deficiencies of the prior art, the present invention provides a silo slip form pouring construction platform and a construction method thereof, which solve the problems of low construction efficiency and difficult control of silo pouring quality in the prior art during the pouring of the silo barrel.

[0005] To achieve the above object, the technical solutions adopted by the present invention are as follows:

[0006] Provide a construction platform for silo slip form pouring, which includes an inner rigid formwork and an outer steel formwork that are annular and sleeved with a gap. The gap between the inner rigid formwork and the outer steel formwork forms a pouring space for the silo wall, and the inner rigid formwork and the outer steel formwork are fixedly connected by a number of gantry hoists. An annular construction platform is arranged on the inner side of the inner rigid formwork and the outer side of the outer steel formwork, and scaffolding hangers are arranged at the bottoms of the two annular construction platforms. A first slip form jack is arranged on each of the number of gantry hoists. A number of support rods extending upward are buried in the circumference of the silo, and each of the number of first slip form jacks is sleeved on each of the number of support rods and cooperates with them to achieve the overall climbing and hovering of the silo slip form pouring construction platform. An inner ring brush and an outer ring brush for cleaning the inner rigid formwork and the outer steel formwork respectively are movably arranged on the support rods.

[0007] Further, a second slip form jack is arranged on the support rod below the first slip form jack. The inner ring brush and the outer ring brush are fixed on the number of second slip form jacks through connecting plates. The number of first slip form jacks and the number of second slip form jacks are synchronously controlled by two sets of hydraulic systems respectively.

[0008] Further, an inner ring nozzle and an outer ring nozzle are respectively arranged above the inner ring brush and the outer ring brush. A number of nozzles are arranged circumferentially on the inner side of the inner ring nozzle and on the outer side of the outer ring nozzle. The inner ring nozzle and the outer ring nozzle are both connected to a lubricant supply device.

[0009] Further, the inner rigid formwork is connected to a central plate located in the middle through a number of tie rods, and the number of tie rods and the inner rigid formwork are connected by a swivel bolt that can be tightened and adjusted.

[0010] In the second aspect, provide a construction method for a silo slip form pouring construction platform, which includes the following steps:

[0011] S1: Bind a circular steel cage required for pouring the silo wall.

[0012] S2: Build a silo slip form pouring construction platform at the circular steel cage; wherein, the inner rigid formwork and the outer steel formwork are respectively located inside and outside the circular steel cage.

[0013] S3: Insert a number of support rods extending upward at equal intervals in the circumference of the circular steel cage, and make each of the number of support rods penetrate through each of the number of first slip form jacks.

[0014] S4: Pour concrete in the annular space formed by the inner rigid formwork and the outer steel formwork to form the wall of the silo, and bind a circular steel cage again on the wall.

[0015] S5: Drive several first synovial jacks to climb synchronously on several support rods, and drive the silo synovial pouring construction platform to slide up to the preset height, then return to step S4 until the silo wall is poured to the design elevation;

[0016] S6: Demolish the silo synovial pouring construction platform.

[0017] Furthermore, during the construction process of steps S1 - S5, the control and detection method for the levelness of the silo synovial pouring construction platform includes: Use a laser level to level and mark points on the support rods as the climbing points for the first synovial jacks; The surveyors shall conduct two - time level monitoring with a level every day, and monitor with a transparent level tube at other times;

[0018] During the construction process of steps S1 - S5, the detection method for the verticality of the silo wall includes: Set control points at the center of the silo and on the inner axis position. After each slide of the silo synovial pouring construction platform, the surveyors use a large plumb bob to cooperate with the control points to detect the verticality of the silo wall.

[0019] Furthermore, after the silo synovial pouring construction platform is built, check the bearing capacity and structural stability of the platform through a loading test;

[0020] Before performing step S4, conduct a primary sliding test, which includes:

[0021] A1: Pour a certain thickness of concrete in advance in the annular space formed by the inner rigid formwork and the outer steel formwork;

[0022] A2: After the concrete reaches the stripping strength, start the primary sliding; During the sliding process, the relative height difference of several first synovial jacks shall not be greater than 50 mm, and the lifting difference between adjacent two jacks shall not be greater than 25 mm; Otherwise, check the structural strength of the platform, the synchronous control of the hydraulic system, and the stripping strength of the concrete again until the reasons are found and the hidden dangers are eliminated;

[0023] When pouring concrete, adopt the method of layered, circumferential, and alternate pouring in positive and negative directions, which includes: First, conduct layered closed pouring according to the preset thickness, and each layer is poured in a cycle of clockwise and counter - clockwise transformation;

[0024] After each slide of the silo synovial pouring construction platform, if the deviation of platform offset and torsion is greater than the specification requirements, use the platform tilting method to correct the platform deviation and the pulling method to correct the platform torsion;

[0025] After each slide of the silo synovial pouring construction platform, the operators use a scaffolding hanger to trim and maintain the inner and outer surfaces of the silo wall;

[0026] During the construction process of steps S1 - S5, the slump of the concrete is 140 - 180 mm.

[0027] Further, during the synchronous climbing process of a number of first slip form jacks on a number of support rods, the residual concrete on the inner and outer steel formwork walls is cleaned by the inner ring brush and the outer ring brush respectively, and lubricants are sprayed on the walls of the inner and outer steel formwork through a number of nozzles on the inner ring spray pipe and the outer ring spray pipe; then a number of second slip form jacks are driven to climb synchronously on the number of support rods until the inner ring brush and the outer ring brush are higher than the inner and outer steel formwork.

[0028] Further, the support rod extends its length upward by inserting a support rod at its upper end. The mutually inserted support rods are fixed by welding. After welding, the inserted part of the support rod is polished by a grinding machine, and the inserted parts of a number of support rods in the circumferential direction are arranged in a high - low staggered manner in the vertical direction.

[0029] Further, during the construction process of steps S1 - S5, when an emergency occurs and construction needs to be interrupted, a construction joint is set for the concrete, and after stopping the pouring, the platform is jacked up at regular intervals until the inner and outer steel formwork are no longer bonded to the concrete.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. Improve construction efficiency: By forming a pouring space for the silo wall through the gap between the inner and outer steel formwork, and combining the design of the gantry hoist and the slip form jack, the overall climbing and hovering of the silo slip form pouring construction platform can be realized, significantly improving the construction efficiency and reducing the time for frequent erection and disassembly of traditional scaffolding.

[0032] 2. Improve construction quality: The silo slip form pouring construction platform of this solution can well resist the influence of factors such as self - weight, construction live load and concrete friction resistance, reduce deformation, and ensure that the verticality and torsional deviation during the slip form process are within the allowable range, thereby improving the construction quality of the silo.

[0033] 3. Improve the pouring quality of the silo wall surface: By setting the inner ring brush and the outer ring brush, the residual concrete on the formwork wall can be cleaned in time during the slip form process, avoiding the adhesion of concrete to the formwork, reducing the friction between the slip form and the concrete, ensuring the pouring quality of the silo wall surface, and avoiding scratching the formed concrete; at the same time, when a number of second slip form jacks are driven to climb with the inner ring brush and the outer ring brush, lubricants can be sprayed on the inner and outer steel formwork through the inner ring spray pipe and the outer ring spray pipe respectively, and the lubricants can be coated on the inner and outer steel formwork by the climbing inner ring brush and outer ring brush to enhance the demoulding ability of the inner and outer steel formwork during the next climb.

[0034] 4. Enhance construction safety: By setting up a circular construction platform and scaffolding, a safe working environment is provided, reducing the risk of working at heights; at the same time, the synchronous control of the hydraulic system ensures the stability of the lifting process; the setting of the central disk and several tie rods enhances the integrity of the structure of this solution, making it not prone to deviation during the synovial membrane process.

[0035] 5. Easy to operate: The control of the level and verticality is carried out through a laser level and a level, which is easy to operate, reduces the error of manual measurement, and improves the construction accuracy.

[0036] 6. Strong emergency handling ability: When it is necessary to interrupt the construction in case of an emergency, the continuity and safety of the construction can be ensured by setting construction joints and regularly lifting the platform.

[0037] 7. Reduce construction costs: By using reusable steel formwork and support rods, the waste of materials is reduced, the construction costs are lowered, which is in line with the development trend of low-carbon modern architecture and has good environmental benefits. Description of the Drawings

[0038] Figure 1 It is a cross-sectional view of the construction platform for the synovial membrane pouring of the silo.

[0039] Figure 2 It is Figure 1 a partial enlarged view of

[0040] Among them, 1, inner steel formwork; 2, outer steel formwork; 3, gantry lifting frame; 4, circular construction platform; 5, scaffolding; 6, first synovial membrane jack; 7, support rod; 8, inner ring brush; 9, outer ring brush; 10, second synovial membrane jack; 11, inner ring spray pipe; 12, outer ring spray pipe; 13, tie rod; 14, central disk. Detailed Implementation Modes

[0041] The following describes the detailed implementation modes of the present invention to facilitate those skilled in the art of this technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the detailed implementation modes. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions created using the concept of the present invention are within the scope of protection.

[0042] As Figure 1 and Figure 2As shown, the silo sliding film casting construction platform of the present scheme includes an inner steel formwork and an outer steel formwork which are annular and spaced apart, the gap between the inner steel formwork and the outer steel formwork forms a casting space for the silo wall, and the inner steel formwork and the outer steel formwork are fixedly connected by a number of gantry lifting frames, annular construction platforms are set up on the inner side of the inner steel formwork and the outer side of the outer steel formwork, and scaffolding hangers are set up at the bottom of the two annular construction platforms, and first sliding film jacks are arranged on the several gantry lifting frames, a number of support rods extending upward are buried on the circumference of the silo, and a number of first sliding film jacks are respectively mounted on a number of support rods and cooperate with them to perform the overall climbing and hovering of the silo sliding film casting construction platform, and the support rods are also movably provided with an inner ring brush and an outer ring brush for cleaning the inner steel formwork and the outer steel formwork respectively.

[0043] A second synovial jack is arranged on the support rod below the first synovial jack, and an inner ring brush and an outer ring brush are fixed on a number of second synovial jacks through connecting plates, and a number of first synovial jacks and a number of second synovial jacks are synchronously controlled by two sets of hydraulic systems respectively; specifically, the first synovial jacks and the second synovial jacks are preferably GYD-60 ball jacks; an inner ring nozzle and an outer ring nozzle are respectively arranged above the inner ring brush and the outer ring brush, and a number of nozzles are arranged on the circumference of the inner side of the inner ring nozzle and on the circumference of the outer side of the outer ring nozzle, and the inner ring nozzle and the outer ring nozzle are both connected to the lubricant supply equipment.

[0044] The inner rigid formwork is connected to the center plate located in the middle thereof through a number of tie rods, and the tie rods and the inner rigid formwork are connected through tightenable basket bolts; in specific implementation, the center plate is a steel plate, and the tie rods are composed of Φ12-HRB400 steel bars and basket bolts. When adjusting and tightening the tie rods, all the tie rods are pre-tightened first, and then a spirit level is placed on the lower crossbeam of the gantry lifting frame, and the tie rods are tightened until the lower crossbeam of the gantry lifting frame is horizontal.

[0045] The present invention also provides a method for constructing a silo sliding film casting construction platform, which comprises the following steps:

[0046] S1: Annular steel cage required for tying and pouring silo wall;

[0047] S2: Build a silo sliding membrane pouring construction platform at the annular steel cage; the inner steel formwork and the outer steel formwork are located on the inner and outer sides of the annular steel cage respectively;

[0048] S3: inserting a plurality of support rods extending upwards at even intervals in the circumferential direction of the annular steel cage, and making the plurality of support rods pass through a plurality of first synovial jacks respectively;

[0049] S4: Pour concrete within the annular space formed by the inner steel formwork and the outer steel formwork to form the silo wall, and re-tie the annular steel reinforcement cage on the silo wall;

[0050] S5: Drive a number of first slip form jacks to climb synchronously on a number of support rods, and drive the silo slip form pouring construction platform to rise to a preset height, then return to step S4 until the silo wall is poured to the design elevation;

[0051] S6: Demolish the silo slip form pouring construction platform.

[0052] After the silo slip form pouring construction platform is built, check the bearing capacity and structural stability of the platform through a load test.

[0053] Before performing step S4, conduct a preliminary slip test, which includes:

[0054] A1: Pour a certain thickness of concrete in advance within the annular space formed by the inner steel formwork and the outer steel formwork;

[0055] A2: After the concrete reaches the stripping strength, start the preliminary slip; during the slip process, the relative height difference of a number of first slip form jacks is not greater than 50 mm, and the lift difference between adjacent two jacks is not greater than 25 mm; otherwise, check the structural strength of the platform, the synchronous control of the hydraulic system, and the stripping strength of the concrete again until the reasons are found and the hidden dangers are eliminated.

[0056] When pouring concrete, the slump of the concrete is 140 - 180 mm, and it is poured in a layered, circumferential, and alternate positive and negative direction manner, which includes: first, conduct layered closed pouring according to the preset thickness, and each layer is poured in a clockwise and counterclockwise transformation cycle; so as to prevent the inner steel formwork and the outer steel formwork from being twisted by the force in the same direction for a long time, and at the same time, the loads on the platform should be uniform and dispersed to keep the center of gravity of the platform stable.

[0057] During the construction process of steps S1 - S5, the control and detection method for the levelness of the silo slip form pouring construction platform includes: leveling and dot marking on the support rods through a laser level, and using this as the climbing point position of the first slip form jacks; the surveyors conduct two-level monitoring with a level every day, and monitor with a transparent level tube at other times;

[0058] During the construction process of steps S1 - S5, the detection method for the perpendicularity of the silo wall includes: set control points at the center of the silo and on the inner axis position, and after each slip of the silo slip form pouring construction platform, the surveyors use a large plumb bob to cooperate with the control points to detect the perpendicularity of the silo wall.

[0059] This solution forms the pouring space of the silo wall through the gap between the inner steel formwork and the outer steel formwork, and combined with the design of the gantry hoist and the slipform jack, it can achieve the overall climbing and hovering of the silo slipform pouring construction platform, significantly improving the construction efficiency and reducing the time for frequent erection and disassembly of traditional scaffolding. At the same time, the silo slipform pouring construction platform of this solution can well resist the influence of factors such as self-weight, construction live load, and concrete frictional resistance, reduce deformation, and ensure that the verticality and torsional deviation during the slipform process are within the allowable range, thereby improving the construction quality of the silo.

[0060] After each slip of the silo slipform pouring construction platform, if the deviation of the platform offset and torsion is greater than the specification requirements, the platform tilting method is used to correct the platform. Specifically, when implementing, the first slipform jack on the offset side can be appropriately lifted to tilt the construction platform (not more than 1%) and then slip until the deviation is corrected and then slip normally. The pulling method is used to correct the torsion of the construction platform. Specifically, when implementing, 15 points are evenly distributed around the position of the gantry hoist, and a manual hoist is used to pull in the direction opposite to the torsion direction, so that the construction platform reaches reverse torsion correction when lifting.

[0061] After each slip of the silo slipform pouring construction platform, the operators repair and maintain the inner and outer surfaces of the silo wall through the scaffolding hanger. This solution provides a safe working environment by setting up a circular construction platform and a scaffolding hanger, reducing the risk of high-altitude operations. At the same time, the synchronous control of the hydraulic system ensures the stability of the slip process.

[0062] During the synchronous climbing process of several first slipform jacks on several support rods, the inner ring brush and the outer ring brush are used to clean the residual concrete on the wall surfaces of the inner and outer steel formworks respectively, and several nozzles on the inner ring spray pipe and the outer ring spray pipe are used to spray lubricant on the wall surfaces of the inner and outer steel formworks respectively. Then, several second slipform jacks are driven to climb synchronously on several support rods until the inner ring brush and the outer ring brush are higher than the inner and outer steel formworks.

[0063] This solution can timely clean the residual concrete on the template wall surface during the slip process by setting up the inner ring brush and the outer ring brush, avoiding the adhesion of concrete to the template, reducing the friction between the slipform and the concrete, ensuring the pouring quality of the silo wall surface, and avoiding scratching the formed concrete. At the same time, when several second slipform jacks drive the inner ring brush and the outer ring brush to climb, the inner ring spray pipe and the outer ring spray pipe can be used to spray lubricant on the inner and outer steel formworks respectively, and the climbing inner ring brush and outer ring brush can be used to coat the lubricant on the inner and outer steel formworks to enhance the demoulding ability of the inner and outer steel formworks during the next climb.

[0064] The supporting rod extends its length upward by inserting the supporting rod at its upper end. The mutually inserted supporting rods are fixed by welding. After welding, a grinding machine is used to polish the insertion part of the supporting rod, and the insertion parts of several supporting rods in the circumferential direction are arranged in a staggered manner in the vertical direction with high and low positions; specifically, during the slip form lifting process, the supporting rod is always inserted into the concrete silo wall, making the entire slip form lifting system relatively stable, safe, and ensuring the project quality; one section of the upper supporting rod is inserted into the lower supporting rod, and the supporting rod is lengthened by butt joint connection. At the joint of the lower supporting rod, a steel pipe necking machine is used to neck one end of the steel pipe from a diameter of φ48 to a diameter of φ40, and the necking length is not less than 50 mm; when connecting, the end with a diameter of φ40 of the steel pipe is inserted into the φ48, and spot welding is carried out around for reinforcement to keep the upper and lower two supporting rods perpendicular.

[0065] During the construction process of steps S1 - S5, when an emergency occurs and construction needs to be interrupted, a construction joint is set for the concrete. After stopping the pouring, the platform is lifted once every once in a while until the inner formwork and the outer formwork are no longer adhered to the concrete, so as to ensure the continuity and safety of the construction.

[0066] For the horizontal construction joint caused by stopping and slipping, it should be cleaned, the loose stones and floating slag should be chiseled off, and it should be washed clean with water. When pouring again, a layer of concrete with half the amount of stones in the concrete mix ratio or a reduced - stone mortar (5 cm thick) with the same mix ratio should be poured first, and then the pouring should continue according to the original mix ratio.

Claims

1. A silo synovial casting construction platform, characterized in that: It includes an inner steel formwork and an outer steel formwork which are annular and spaced apart, the gap between the inner steel formwork and the outer steel formwork forms a casting space for the silo wall, and the inner steel formwork and the outer steel formwork are fixedly connected by a number of gantry lifting frames, annular construction platforms are set up on the inner side of the inner steel formwork and the outer side of the outer steel formwork, and scaffolding hangers are set up at the bottom of the two annular construction platforms, and a number of first sliding membrane jacks are arranged on a number of the gantry lifting frames, a number of support rods extending upward are buried on the circumference of the silo, and a number of first sliding membrane jacks are respectively mounted on a number of support rods and cooperate with the support rods to perform the overall climbing and hovering of the silo sliding membrane casting construction platform, and an inner ring brush and an outer ring brush for cleaning the inner steel formwork and the outer steel formwork respectively are movably arranged on the support rods.

2. The silo sliding film pouring construction platform according to claim 1 is characterized in that: A second synovial jack is arranged on the support rod below the first synovial jack, the inner ring brush and the outer ring brush are fixed on a plurality of second synovial jacks through connecting plates, and the plurality of the first synovial jacks and the plurality of the second synovial jacks are synchronously controlled by two sets of hydraulic systems respectively.

3. The silo sliding film pouring construction platform according to claim 2 is characterized in that: An inner ring nozzle and an outer ring nozzle are respectively arranged above the inner ring brush and the outer ring brush, and a plurality of nozzles are arranged on the circumference of the inner side of the inner ring nozzle and on the circumference of the outer side of the outer ring nozzle. The inner ring nozzle and the outer ring nozzle are both connected to the lubricant supply device.

4. The silo sliding film pouring construction platform according to claim 1 is characterized in that: The inner rigid template is connected to a central disk located in the middle thereof through a plurality of tie rods, and the plurality of tie rods and the inner rigid template are connected through tightenable and adjustable flower basket bolts.

5. A construction method using the silo sliding film casting construction platform according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Annular steel cage required for tying and pouring silo wall; S2: Build a silo sliding membrane pouring construction platform at the annular steel cage; the inner steel formwork and the outer steel formwork are located on the inner and outer sides of the annular steel cage respectively; S3: inserting a plurality of support rods extending upwards at even intervals in the circumferential direction of the annular steel cage, and making the plurality of support rods pass through a plurality of first synovial jacks respectively; S4: pour concrete in the annular space formed by the inner steel formwork and the outer steel formwork to form the silo wall, and tie the annular steel cage on the silo wall again; S5: driving a plurality of first synovial jacks to synchronously climb on a plurality of support rods, and driving the silo synovial pouring construction platform to slide up to a preset height, and then returning to step S4 until the silo wall is poured to the designed elevation; S6: Dismantle the silo synovial pouring construction platform.

6. The construction method of the silo sliding film casting construction platform according to claim 5 is characterized in that: During the construction process of steps S1-S5, the control and detection method of the horizontality of the silo synovial casting construction platform includes: leveling and marking on the support rod by a laser leveler, which is used as the climbing point of the first synovial jack; the surveyor uses a level to monitor the level twice a day, and monitors with a transparent level tube at other times; During the construction process of steps S1-S5, the method for detecting the verticality of the silo wall includes: setting control points at the center of the silo and on the inner axis position, and after each sliding of the silo sliding film casting construction platform, the surveyor uses a large plumb line in conjunction with the control points to detect the verticality of the silo wall.

7. The construction method of the silo sliding film casting construction platform according to claim 6 is characterized in that: After the silo synovial casting construction platform is built, the load-bearing capacity and structural stability of the platform are checked through loading tests; Before executing step S4, an initial sliding test is performed, which includes: A1: Pre-pour a certain thickness of concrete in the annular space formed by the inner steel formwork and the outer steel formwork; A2: After the concrete reaches the demoulding strength, start the initial sliding. During the sliding process, the relative height difference of several first sliding membrane jacks is not more than 50mm, and the height difference between two adjacent jacks is not more than 25mm. Otherwise, check the structural strength of the platform, the synchronous control of the hydraulic system, and the demoulding strength of the concrete again until the cause is found and the hidden danger is eliminated. When pouring concrete, the method of pouring in layers, circles, and alternately in positive and negative directions is adopted, which includes: firstly, pouring in layers according to the preset thickness, and pouring each layer in a clockwise and counterclockwise alternating cycle; After each sliding of the silo sliding film pouring construction platform, if the deviation of the platform offset and torsion is greater than the specification requirements, the platform tilting method is used to correct the platform, and the pulling method is used to correct the platform torsion; After each sliding of the silo sliding film pouring construction platform, the operator uses the scaffolding hanger to repair and maintain the inner and outer surfaces of the silo wall; During the construction process of steps S1-S5, the slump of the concrete is 140-180 mm.

8. The silo sliding film pouring construction method according to claim 5 is characterized in that: During the process of synchronously climbing a number of first synovial jacks on a number of support rods, the residual concrete on the wall surfaces of the inner rigid formwork and the outer steel formwork are cleaned respectively by the inner ring brush and the outer ring brush, and lubricant is sprayed on the wall surfaces of the inner rigid formwork and the outer steel formwork respectively through the several nozzles on the inner ring nozzle and the outer ring nozzle; then, a number of second synovial jacks are driven to synchronously climb on the number of support rods until the inner ring brush and the outer ring brush are higher than the inner rigid formwork and the outer steel formwork.

9. The construction method of the silo sliding film casting construction platform according to claim 5 is characterized in that: The support rod is extended upward by inserting a support rod at its upper end. The mutually inserted support rods are fixed by welding. After welding, the inserting parts of the support rods are polished using a grinder, and the inserting parts of several support rods in the circumferential direction are arranged in high and low staggered manner in the vertical direction.

10. The construction method of the silo sliding film casting construction platform according to claim 1, characterized in that: During the construction process of steps S1-S5, when an emergency situation requires the construction to be interrupted, a construction joint is set in the concrete, and after the pouring is stopped, the platform is slid up once every period of time until the inner steel formwork and the outer steel formwork are no longer bonded to the concrete.

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